Mumbai, May 30 -- Indian stock markets opened flat in the red on Friday, as global concerns once again pressured investor sentiment.

The recent decision by the US Federal Appeals Court to allow the Trump administration to continue with its tariff policy till a higher court decides has impacted market mood across the globe. Investors are now awaiting further clarity from higher courts, which will take a final call on the legal challenges against these tariffs.

At the opening bell, the benchmark Nifty 50 index slipped by 21.00 points or 0.08 per cent to 24,812.60. Similarly, the BSE Sensex began the day with a decline of 167.33 points or 0.20 per cent at 81,465.69.

The weakness in the Indian markets mirrors the overall negative trend in ...